<template>
<div class="home-category" @mouseleave="categoryId = null">
    <ul class="menu">
       <li v-for="item in menuList" :key="item.id" @mouseenter="categoryId = item.id" :class="{ active: categoryId === item.id }">
           <RouterLink :to="`/category/${item.id}`">{{ item.name }}</RouterLink>
           <template v-if="item.children">
               <RouterLink v-for="sub in item.children" :key="sub.id" :to="`/category/sub/${sub.id}`">
                   {{ sub.name }}
               </RouterLink>
           </template>
           <span v-else>
               <XtxSkeleton width="60px" height="18px" style="margin-right: 5px" bg="rgba(255,255,255.0.2)"></XtxSkeleton>
               <XtxSkeleton width="50px" height="18px" bg="rgba(255,255,255,0.2)"></XtxSkeleton>
           </span>
       </li>
    </ul>
    <!-- 弹层 -->
    <div class="layer">
        <h4 v-if="currCategory">{{ currCategory.id === 'brand' ? '品牌' : '分类'}}推荐
            <small>根据您的购买或浏览记录推荐</small>
        </h4>
        <ul v-if="currCategory && currCategory.goods && currCategory.goods.length">
            <li v-for="item in currCategory.goods" :key="item.id">
                <RouterLink to="/">
                    <img :src="item.picture" alt="">
                    <div class="info">
                        <p class="name ellipsis-2">{{ item.name }}</p>
                        <p class="desc ellipsis">{{ item.desc }}</p>
                        <p class="price"><i>¥</i>{{ item.price }}</p>
                    </div>
                </RouterLink>
            </li>
        </ul>
        <!-- 品牌 -->
        <ul v-if="currCategory && currCategory.brands && currCategory.brands.length">
            <li class="brand" v-for="item in currCategory.brands" :key="item.id">
                <RouterLink to="/">
                    <img :src="item.picture" alt="">
                    <div class="info">
                        <p class="place"><i class="iconfont icon-dingwei"></i>{{ item.place }}</p>
                        <p class="name ellipsis">{{ item.name }}</p>
                        <p class="desc ellipsis-2">{{ item.desc }}</p>
                    </div>
                </RouterLink>
            </li>
        </ul>
    </div>
</div>
</template>

<script setup>
import { useCategoryStore } from '@/stores'
import { ref, computed, onMounted } from "vue"
import { findBrand } from '@/api/home'
import XtxSkeleton from "@/components/library/xtx-skeleton.vue"

const brand = ref({
    id: 'brand',
    name: '品牌',
    children: [{
        id: 'brand-children',
        name: '品牌推荐'
    }],
    brands: []
})

const store = useCategoryStore()
const menuList = computed(() => {
    const list = store.categoryList.map(item => {
        return {
            id: item.id,
            name: item.name,
            // 防止初始化没有children的时候调用slice函数报错
            children: item.children && item.children.slice(0,2),
            goods: item.goods
        }
    })
    list.push(brand.value )
    return list
})

// 获取当前分类逻辑
const categoryId = ref(null)
const currCategory = computed(() => {
    return menuList.value.find(item => item.id === categoryId.value)
})

onMounted(() => {
    getBrandList()
})

// 获取热门品牌
const getBrandList = async () => {
    const { result } = await findBrand()
    console.log(result)
    brand.value.brands = result
}
</script>

<style scoped lang="less">
@import "../../../assets/styles/variables";
.home-category {
    width: 250px;
    height: 500px;
    background: rgba(0,0,0,0.8);
    position: relative;
    z-index: 99;
    .menu {
        li {
            padding-left: 40px;
            height: 50px;
            line-height: 50px;
            &:hover,&.active {
                background: @xtxColor;
            }
            a {
                margin-right: 4px;
                color: #fff;
                &:first-child {
                    font-size: 16px;
                }
            }
        }
    }
  .layer {
    width: 990px;
    height: 500px;
    background: rgba(255,255,255,0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;
        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #e3f9f4;
          }
          img {
            width: 95px;
            height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
            width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
        li.brand {
            height: 180px;
            a {
                align-items: flex-start;
                img {
                    width: 120px;
                    height: 160px;
                }
                .info {
                    p {
                        margin-top: 8px;
                    }
                    .place {
                        color: #999;
                    }
                }
            }
        }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
}

// 骨架动画
xtx-skeleton {
    animation: fade 1s linear infinite alternate;
}
@keyframes fade {
    from {
        opacity: 0.2;
    }
    to {
        opacity: 1;
    }
}
</style>